/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.solr.analysis;

import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 * @version $Id: BaseCharFilterFactory.java 890798 2009-12-15 14:13:59Z koji $
 * @since Solr 1.4
 * 
 */
public abstract class BaseCharFilterFactory implements CharFilterFactory {

	public static final Logger log = LoggerFactory
			.getLogger(BaseCharFilterFactory.class);

	/** The init args */
	protected Map<String, String> args;

	public Map<String, String> getArgs() {
		return args;
	}

	public void init(Map<String, String> args) {
		this.args = args;
	}

	protected int getInt(String name) {
		return getInt(name, -1, false);
	}

	protected int getInt(String name, int defaultVal) {
		return getInt(name, defaultVal, true);
	}

	protected int getInt(String name, int defaultVal, boolean useDefault) {
		String s = args.get(name);
		if (s == null) {
			if (useDefault)
				return defaultVal;
			throw new RuntimeException(
					"Configuration Error: missing parameter '" + name + "'");
		}
		return Integer.parseInt(s);
	}
}
